Mercurial > gemma
diff pkg/imports/sr.go @ 1184:064d44ccc6f2
Adjust contour lines heights to multiples of step width
As the step width is currently 0.1 m, this gives one contour line at
each whole-number decimeter of depth.
| author | Tom Gottfried <tom@intevation.de> |
|---|---|
| date | Thu, 15 Nov 2018 17:32:40 +0100 |
| parents | 930fdd8b474f |
| children | 58acc343b1b6 |
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--- a/pkg/imports/sr.go Thu Nov 15 16:33:12 2018 +0100 +++ b/pkg/imports/sr.go Thu Nov 15 17:32:40 2018 +0100 @@ -24,6 +24,7 @@ "errors" "fmt" "io" + "math" "os" "path" "path/filepath" @@ -441,7 +442,14 @@ } defer stmt.Close() - octree.DoContours(tree, contourStepWidth, func(res *octree.ContourResult) { + // Adjust contour lines heights to multiples of contourStepWidth + heights := make([]float64, 0) + h := contourStepWidth * math.Ceil(tree.Min.Z/contourStepWidth) + for ; h <= tree.Max.Z; h += contourStepWidth { + heights = append(heights, h) + } + + octree.DoContours(tree, heights, func(res *octree.ContourResult) { if err == nil { _, err = stmt.Exec( id, res.Height, tree.EPSG,